Alternating Voltage Introduced NiCo Double Hydroxide Layered Nanoflakes for an Asymmetric Supercapacitor

Mingjun Jing; Hongshuai Hou; Craig E Banks; Yingchang Yang; Yan Zhang; Xiaobo Ji

doi:10.1021/acsami.5b05660

Alternating Voltage Introduced NiCo Double Hydroxide Layered Nanoflakes for an Asymmetric Supercapacitor

ACS Appl Mater Interfaces. 2015 Oct 21;7(41):22741-4. doi: 10.1021/acsami.5b05660. Epub 2015 Oct 8.

Authors

Mingjun Jing¹, Hongshuai Hou¹, Craig E Banks², Yingchang Yang¹, Yan Zhang¹, Xiaobo Ji¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Central South University , Changsha 410083, China.
² Faculty of Science and Engineering, School of Chemistry and the Environment, Division of Chemistry and Environmental Science, Manchester Metropolitan University , Chester Street, Manchester M1 5GD, United Kingdom.

PMID: 26435064
DOI: 10.1021/acsami.5b05660

Abstract

An electrochemical alternating voltage approach of producing NiCo double hydroxide (NiCoDH) layered ultrathin nanoflakes with large specific surface area (355.8 m(2) g(-1)), remarkable specific capacitance and rate capability is presented. The obtained NiCoDH as anode for asymmetric supercapacitors shows excellent energy density of 17.5 Wh kg(-1) at high power density of 10.5 kW kg(-1) and cycling stability (91.2% after 10,000 cycles).

Keywords: NiCo double hydroxide; alternating voltage; asymmetric supercapacitors; electrochemical; nanoflakes.

Publication types

Research Support, Non-U.S. Gov't